High Barrier PP Multi-Layer Co-extrusion Roll

EVOH is highly crystalline, and its properties mainly depend on the mole fraction of two kinds of comonomers.
The EVOH of High Barrier PP Multi-Layer Co-extrusion Roll is air resistance, moisture resistance and processing performance change with the change of ethylene content. When the ethylene content increases, the gas barrier ofHigh Barrier PP Multi-Layer Co-extrusion Roll decreases, the moisture resistance of High Barrier PP Multi-Layer Co-extrusion Roll improves, and the resin of High Barrier PP Multi-Layer Co-extrusion Roll is easier to process.When the ethylene content is greater than 50 percent, the air resistance of High Barrier PP Multi-Layer Co-extrusion Roll will be seriously damaged, so the ethylene content in EVOH generally remains between 20 percent and 45 percent.In addition, the air resistance of High Barrier PP Multi-Layer Co-extrusion Roll decreases with increasing temperature, such as from 20℃.At 35℃, the oxygen transmittance increases more than three times.In addition, EVOH also has high strength, elasticity, surface hardness and wear resistance.